This name is a synonym of Avena strigosa var. trichophora (Thell.) E. Morren.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25560331) with original publication details: Bol. Soc. Brot., sér. 2, 13: 643 1938.
This name record (from Tropicos) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Avena strigosa in version 1 of The Plant List.